Goheky



W, MONTGOMERY, JR. & l. RIEHL.

APPARATUS FOR SUPPLYING MOLTEN METAL T0 MOLDS.

APPLICATION FILED FEB. 17. 1915.

3% Patented Aug. 22, 1916.

2 SHEETS-SHEET 2- Jwucwtord WILLIAM Moweenmflm JusTus Ruzm...

ant @FFEQ WILLIAM MONTGOMERY, JR., AND JUSTUS RIEHL, OF BALTIMORE,MARYLAND, ASSIGNORS, BY DIRECT AND MESNE ASSIGNMENTS, OF ONE-HALF TOSAID MONTGOMERY AND ONE-HALF T0 JOHN N. Mc-EARLAND, BOTH GE BALTIMGRE,

MARYLAND.

APPARATUS FOR SUPPLYING MOLTEN METAL T0 MOLDS.

masses.

Specification of Letters Patent.

Patented A mg. 22, 1916.

Application filed February 17, 1915. Serial No. 8,845.

others skilled in the art to which it appertains to make and use thesame.

This invention relates to an apparatus for supplying molten metal tomolds for use upon type casting machines, and more particularly to adevice as specified designed prinmrily for u c upon logotype machines,as disclosed in application for Letters Patent, filed May 15, 1914-,Serial No. 839,770.

The primary object of this invention is to provide a melting pot whichis constructed of a shell having inner and outer spaced walls, and toinsertor pack between the inner and outer walls of the melting pot aninsulating material for preventing the radiation of heat through thesides of the melting pot, for increasing the hcating proclivities of themelting pot and decreasing the amount of fuel necessary for the propermelting of the metal used in casting type bars.

Another object of this invention is to provide an adjustable mountingfor a burner for heating the interior of the melting pot, by means ofwhich the distance between the upper end of the burner and the bottom ofthe melting! pot may be varied, as desired.

Another object of this invention is to provide anovel form of pump forforcing molten metal from the melting pot into a casting slot for theforming of slugs or type bars.

Vith the foregoing and other objects in view this invention consists insuch novel like or corresponding parts throughout the several news, andin which Figure l is a vertical section through the improved meltingpot, Fig. 2 is a cross sec tion on the line 2-2 of Fig. 1, Fig.- 3 is afragmentary perspective view of a part of the mechanlsm for adjustablymounting the burner, Fig. 4; is a side elevation of the pump, and Fig.:3 is-a plan View of a part 'of the actuating mechanism of the'pump.

Referring more particularly to the drawings, 1 designates the outershell or casing of the melting pot, which shell is construct-.

ed of inner and outer walls 2 and 3, whic are connected at their lowerends bv a transversely extending web r. The inner and outer walls 2 and3 are spaced from ea :li other, leaving a space 5 between their'facs mgsides. which space is filled with packed msuloid. which is auon-conductor oi heat. The insuloid which is packed with- In' the space5 is formed of treated diatomaceous earth and being-a non-conductor ofheat will prevent the radiation of the heat from the melting; pot andconsequently decrease the amount of heat necessary for maintaining themetal within'thepot in a molten state.

Diatom is the skeleton of diatomaceous earth which has been treated toremove the organic and foreign substancestherefrom The inner wall 2 ofthe n'icltingpot has secured thereto and extending transversely acrossthe interior of the wall, an arcuatc bottom 6, which is spaced upwardlyfrom the lower ends of the side walls of the shell 1 and curvesupwardly, as is clearly shown in Fig. 1 of the drawings, forming apocket 7 in the bottom or lower end of the melting pot structure, whichreceives the heat ing flame from a burner 8. The burner 8 is of theordinary construction of burner used upon melting pots, having its upperend 9 flared outwardly for properly spreading the flame issuingtherefrom. The burner S carries a mixer 10 associated therewith formixing the proper amount of air with the gas to insure the propercombustion of the latter. A supply pipe 11 communicates with the burner8 and is provided for supplying the necessary gas. to the 2, and itfurther has plates burner. The burner 8 rests iipon and is de tachablyconnected to a bar 12, which bar is in turn adjustably carried byvertical bars 13 and 14:. The bars 13 and-14 are secured to the undersurface ofthe transversely extendingweb 4 by means of angled irons 15,and suitable bolts or fastening means 16. The vertical bars 13 and 14are provided with longitudinally extending slots 17, through which slotsextend bolts 18, which are carried by and extend longitudinally from theends of the bar 12. Thumb nuts 19 are mounted upon the outer "ends ofthe bolts 18 and engage the outer surfaces of the bars 13 and 14, forClamping engagement therewith for holding the bar 12 and consequentlythe burner 8 in'various-adjusted positions with respect to the bottizlni6 of the melting pot shell 1.

The melting pot shell 1 has a pipe 20 extending therethrough, whichcommunicates with the interior of the melting pot and has an ordinarystop cock 21 carried by its outer end to permit of the draining of themolten metal from the pot when desired.

A pump construction 30'is used in connection with the melting pot forsupplying the molten metal to a mold, or the casting slot of a logotypeor linotype machine. The pump construction 30 embodies a body portion31, which is rectangular in shape and isprovided. with a well or metalreceiv ing opening 32 extending vertically therein, which has atransverselywextending passageway or duct 32 communicating with thebottom or lower end of the same. The passageway 32 also communicateswith the lower end of an outlet opening or duct 33. The duct 33extendsparallel to the well 32 and .into and through a spout 34 which isformed upon theupperend of the body 31. The spout 34: has its upper endtapered, as is shown at 35, and the duct 33 tapers upwardly from thecommencement of the taper thereof, being of a smaller diameter at theapex of the spout than otherwise, so as to permit the molten metal,should it become chilled, to fall downwardly within the duct 33. Theduct or passageway 33 is of uniform bore with the exception of the uppertapered end thereof. The body portion 31 is shorter in length than thewidth of the interior of the melting pot, and it has transverselyextending lugs 36 formed upon the lower end of the same, which lugsengage the inner surfaces of the inner walls 37 formed upon its upperend and extending transversely therefrom oppositely to the direction ofthe lugs 36, which plates rest upon the upper edges of the walls 2 and 3of the melting pot shell 1, and also upon the upper surface oftransversely extending flanges 39 which are formed adjacent to the upperedges of the outer walls 3. The plates 37 are bolted to the flanges 39for holding the body 31 of the pump construction 30 properly positionedwithin the melting pot. The body 31 is provided with a plurality ofopenings 39 formed therein and extending through the sides of the same,communicating with the well 32, below the upper edge of the same, topermit of the passage of the molten metal into the i will A piston 40 isslidably mounted within the well 32, and has a bar 41pivotally'connected to its upper end, which bar is in turn pivotallyconnected to a lever 42. The lever 42 is fulcrumed at its outer end asindicated at- 43. The lever 42 has an eye 44 formed therein, throughwhich projects a transversely projecting pin 45 upon which is rotatablymounted a roller 46. The roller 46 isprovided for engagement with a camfor actuating the lever 42 upon its fulcrum 43 for controlling themovement of.

the piston 10 within the well 32. The piston 40 is of suiiicient thelever l2 is released, the cam heretofore Inentionedbeing formed so as topermit of a sudden drop'of the piston within the well, for forcing themolten metal upwardly through the duct 33' and out through the upperopen end of the same into a casting slot or mold. The openings 39 areformed weight, to drop, when so as to permit of the flow of the moltenmetal into the well 32, when the piston 40 is at the upper terminal or"its movement. lVhen the piston 40 falls within the well, it

automatically cuts off the flow of molten metal into the well, byforming a closure for the openings 39, as is indicated in Fig. 1 of thedrawings.

If it is so desired, wing nuts may be"em-- ployed in'lieu oi the thumbnuts 19, as illustrated in the drawings, without departing from thespirit of this invention.

The insuloid which is inserted within the space 5'is preferably in agranular state and is firmly packed within the recess. The provision ofthe insuloid within the space between the inner and outer walls of themelting pot will retain the heat generated by the burning gas from theburner 8 with in the'melting pot and maintain the metal therein in alength of time from the use of a minimum amount of heating fuel, thanwould be pos sible in the ordinary construction of melting pots. Thetransversely extending webs 4 form a bottom for the recess 5 and retainthe granular insuloid within the space 5. From the foregoing descriptiontaken in 'connbction with the accompanying drawings the advantages ofconstruction and of the method of operation of the improved apparatusfor supplying molten metal to molds will be readilyapparent to thoseskilled in the art to which this invention appertains and, while in theforegoing description, the

molten state, for a greater principle of the operation of this inventionhas been described together with various l hended within the scope ofwhat is claimed.

What is claimed is I 1. In an apparatus for supplying molten metal tomolds, the combination, of a melting pot having spaced inner and outerwalls, a web formed integral with and connecting the lower edges of saidwalls, diatom packed between said walls, means for supplying moltenmetal to a mold including a body for insertion into the pot, laterallyextending wings formed upon the upper end of said body for limiting theinsertion of said body into the pot, a spout formed upon and extendingupwardly from said body, said body provided with a communicating welland 'an egress duct, said duct extending up wardly through said spoutand gradually decreasing in diameter at the end of the spout, and apiston mounted within said well for forcing molten metal upwardlythrough said spout.

2. In an apparatus for supplying molten metal to miolds, a melting pothaving inner and outer spaced walls, a web formed .integral with andconnecting the lower ends of said walls, heat non-conducting materialpacked between said inner and outer walls, an arcuate web secured to theinner surfaces communicating with each other, a piston slidably mountedin said well for forcing molten metal upwardly through the egress ductupon downward movement of the pis ton, said egress duct having itsU1)P81 6Ill tapered inwardly.

In an apparatus for supplying molten metal to molds, a melting pothaving inner and outer spaced walls, a web formed integral with andconnecting the lower edges of said walls, heat non-conducting materialpacked between said inner and outer walls, an arcuate web secured to theinner surfaces of said inner walls upwardly from their lower ends andforming a bottom for the melting pot, and adrain pipe communicating withthe interior of the melting pot a short distance upwardly from saidarcuate wall.

i In testimony whereof we afiix our signatures in presence of twowitnesses.

' -WILLIAM MONTGDMERY, JR.

JUSTUS RIEHL.

' Witnesses JAMES F. KLEGKA, Cnannnon A. Jones.

